Figure 5

Internal energy of the C2 and C3 phases relative to the isochoric mixture of H2O and H2.
Green lines represent the energy of the hydrate phases; red lines represent the energy of the isochoric mixture of ice-VIII and H2-I phases.
Internal energy of the C2 and C3 phases relative to the isochoric mixture of H2O and H2.
Green lines represent the energy of the hydrate phases; red lines represent the energy of the isochoric mixture of ice-VIII and H2-I phases.